<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <!-- 这个标签就是请求favicon图标.主要为了给一些老版本的浏览器使用 -->
    <!-- %PUBLIC_URL% 路径别名: http://localhost:3000 -->
    <link rel="icon" href="%PUBLIC_URL%/favicon.ico" />
    <!-- 跟视口有关,主要在移动端网页中使用 -->
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <!-- 这个是给app应用使用的配置主体颜色的标签, 对于我们写网页没有用 -->
    <meta name="theme-color" content="#000000" />
    <meta
      name="description"
      content="Web site created using create-react-app"
    />
    <!-- 用来配置ios app的 图标文件 -->
    <link rel="apple-touch-icon" href="%PUBLIC_URL%/logo192.png" />
    <!--
      manifest.json provides metadata used when your web app is installed on a
      user's mobile device or desktop. See https://developers.google.com/web/fundamentals/web-app-manifest/ 也是给app使用的配置文件
    -->
    <link rel="manifest" href="%PUBLIC_URL%/manifest.json" />
    <!--
      Notice the use of %PUBLIC_URL% in the tags above.
      It will be replaced with the URL of the `public` folder during the build.
      Only files inside the `public` folder can be referenced from the HTML.

      Unlike "/favicon.ico" or "favicon.ico", "%PUBLIC_URL%/favicon.ico" will
      work correctly both with client-side routing and a non-root public URL.
      Learn how to configure a non-root public URL by running `npm run build`.
    -->
    <title>React App</title>
  </head>
  <body>
    <!-- 当浏览器禁用了javascript之后,noscript里面的内容就会展示在网页中.如果浏览器没有禁用javascript,则noscript里面的内容不会展示 -->
    <noscript>You need to enable JavaScript to run this app.</noscript>
    <div id="root"></div>
    <!--
      This HTML file is a template.
      If you open it directly in the browser, you will see an empty page.

      You can add webfonts, meta tags, or analytics to this file.
      The build step will place the bundled scripts into the <body> tag.

      To begin the development, run `npm start` or `yarn start`.
      To create a production bundle, use `npm run build` or `yarn build`.
    -->
  </body>
</html>
